rummage 0.1.2

A simple and opinionated environment collector
Documentation 
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fn main() {
    // Re-export variables that are only available at build.rs-time, but not at compile time.
    for var in &[
        "PROFILE",
        "TARGET",
        "CARGO_CFG_TARGET_FAMILY",
        "CARGO_CFG_TARGET_OS",
        "CARGO_CFG_TARGET_ARCH",
        "CARGO_CFG_TARGET_POINTER_WIDTH",
        "CARGO_CFG_TARGET_ENDIAN",
        "CARGO_CFG_TARGET_FEATURE",
        "HOST",
    ] {
        println!(
            "cargo:rustc-env=RUMMAGE_{}={}",
            var,
            std::env::var(var).unwrap_or_else(|_| "unknown".into())
        );
    }
    
    let rustc_version = rustc_version::version_meta().expect("Failed to gather rustc version informatonn");
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_MAJOR={}",  rustc_version.semver.major);
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_MINOR={}",  rustc_version.semver.minor);
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_PATCH={}",  rustc_version.semver.patch);
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_PRE={}", rustc_version.semver.pre);
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_BUILD={}", rustc_version.semver.build);
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_COMMIT_HASH={}", rustc_version.commit_hash.unwrap_or_default());
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_COMMIT_DATE={}", rustc_version.commit_date.unwrap_or_default());
    println!("cargo:rustc-env=RUMMAGE_RUSTC_VERSION_LLVM_VERSION={}", rustc_version.llvm_version.map(|l| format!("{}.{}", l.major, l.minor)).unwrap_or_default());
}